Sources

found: Wikipedia, WWW, Feb. 3, 2011:(an American paleontologist; proposed the theory of punctuated equilibrium in 1972; In 1969, Eldredge became Curator in the Department of Invertebrates at the American Museum of Natural History, a position which he still holds; he is also Adjunct Professor at the City University of New York; his home in Ridgewood, New Jersey)